Smiling and use of first-name by a healthcare receptionist robot: Effects on user perceptions, attitudes, and behaviours. - Johanson, Deborah L.; Ahn, Ho Seok; Sutherland, Craig J.; Brown, Bianca; MacDonald, Bruce A.; Lim, Jong Yoon; Ahn, Byeong-Kyu; Broadbent, Elizabeth (Paladyn J. Behav. Robotics, 2020)